Broadchurch (2013)

The golden cliffs at West Bay in Dorset are the show's signature image, and the small seaside town around them turns a boy's death into a test of every neighbour's loyalty. David Tennant's outsider detective and Olivia Colman's local one never quite understand each other, which is the point. The first series is the one to watch; the second is weaker, the third a strong return.